Comparison of three different configurations of an optical sensor for tip-clearance measurements in turbines

Iker García; Joseba Zubia; Amaia Berganza; Josu Beloki; Javier Mateo; Carmen Vazquez

doi:10.1117/12.2059642

2 June 2014 Comparison of three different configurations of an optical sensor for tip-clearance measurements in turbines

Iker García, Joseba Zubia, Amaia Berganza, Josu Beloki, Javier Mateo, Carmen Vazquez

Author Affiliations +

Proceedings Volume 9157, 23rd International Conference on Optical Fibre Sensors; 9157A5 (2014) https://doi.org/10.1117/12.2059642
Event: OFS2014 23rd International Conference on Optical Fiber Sensors, 2014, Santander, Spain

Abstract

The influence of the tip clearance on the performance of rotating turbo machinery is well known. The objective of this work was to measure this parameter using a non-contact sensor with a precision of 30 μm in a real turbine. An optical sensor whose main component is a bundle of optical fibers was selected to carry out the measurements. Three different configurations of the sensor have been tested by taking measurements on two distinct turbines. Tip-clearance measurements are achieved with the desired precision, providing the opportunity to develop applications related to structural health monitoring or active clearance-control systems.

Citation Download Citation

Iker García, Joseba Zubia, Amaia Berganza, Josu Beloki, Javier Mateo, and Carmen Vazquez "Comparison of three different configurations of an optical sensor for tip-clearance measurements in turbines ", Proc. SPIE 9157, 23rd International Conference on Optical Fibre Sensors, 9157A5 (2 June 2014); https://doi.org/10.1117/12.2059642

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